What is time reversal and what it cannot do?

Dyab, Walid; Sarkar, Tapan K.; Salazar-Palma, M.

doi:10.1109/cama.2014.7003396

Cited by 2 publications

(1 citation statement)

References 19 publications

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“…That notwithstanding, the TR takes advantage of the multipath effect and manipulates it to constructive use, the more, the better. Electromagnetic TR methods have attracted increasing interest recently with wide applications [3][4][5][6][7][8] because of focusing waves, both temporally and spatially, through an inhomogeneous medium [9,10]. The TR technique was postulated on the reciprocity property of the wave equation and is analogous to phase conjugation in optics.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation study on bowtie antenna-based time reversal mirror for super-resolution target detection

Twumasi

2019

Journal of Electrical Engineering

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Bowtie antenna-based time reversal mirror (TRM), incorporating with randomly distributed and arbitrarily shaped wire metamaterials medium, is proposed to realize super-resolution target detection. The achieved performance for standard and scatterer bowtie antenna TRM is compared and discussed. The dual-band bowtie antennas resonate at 2.45 GHz and 5.2 GHz and a super-resolution of 0.0817 of the free-space wavelength at 2.45 GHz has been achieved. For the first time, studies show that the TRM with microstructure perturbations (namely scatterers) can enhance the resolution in some cases. Proposing a method of super-resolving transmission of electromagnetic waves is very important to realize multi-independent channels in a compact space for the related applications.

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